﻿using System;

namespace _1295_find_numbers_with_even_number_of_digits
{
    class Program
    {
        static void Main (string[] args)
        {
            int[] nums = new int[] { 100000 };
            Console.WriteLine (FindNumbers(nums));
        }
        public static int FindNumbers (int[] nums)
        {
            int count = 0;
            for (int i = 0;i < nums.Length;i++)
            {
                int n = 0;
                while (nums[i] >= 10)
                {
                    n++;
                    nums[i] /= 10;
                }
                n++;
                count += n % 2 == 0 ? 1 : 0;
            }
            return count;
        }
    }
}
